InToSEO

In last couple days Google introduced some new features in to Adsesne program.
first the most important is new tag which will mark relevant parts of text to use as “base” to display ads on site.

Form FAQ:

Section targeting allows you to suggest sections of your text and HTML content that you’d like us to emphasize or downplay when matching ads to your site’s content. By providing us with your suggestions, you can assist us in improving your ad targeting. We recommend that only those familiar with HTML attempt to implement section targeting.
To implement section targeting, you’ll need to add a set of special HTML comment tags to your code. These tags will mark the beginning and end of whichever section(s) you’d like to emphasize or de-emphasize for ad targeting.
The HTML tags to emphasize a page section take the following format:
< !– google_ad_section_start –>
< !– google_ad_section_end –>
You can also designate sections you’d like to have ignored by adding a (weight=ignore) to the starting tag:
< !– google_ad_section_start(weight=ignore) –>

Other things are new reports in user panel.
An changing number of ads in units. You can read about it here.